UINavigationBar

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
 
 
    //创建一个导航栏 
    UINavigationBar *navigationBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];   
     
    //创建一个导航栏集合 
    UINavigationItem *navigationItem = [[UINavigationItem alloc] initWithTitle:nil];   
     
    //创建一个左边按钮 
    UIBarButtonItem *leftButton = [[UIBarButtonItem alloc] initWithTitle:@"左边"    
                                                              style:UIBarButtonItemStyleBordered    
                                                              target:self    
                                                              action:@selector(clickLeftButton)];   
 
    //创建一个右边按钮 
    UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithTitle:@"右边"    
                                                                  style:UIBarButtonItemStyleDone    
                                                                  target:self    
                                                                  action:@selector(clickRightButton)];   
    //设置导航栏内容 
    [navigationItem setTitle:@"雨松MOMO程序世界"]; 
     
     
    //把导航栏集合添加入导航栏中，设置动画关闭 
    [navigationBar pushNavigationItem:navigationItem animated:NO];  
     
    //把左右两个按钮添加入导航栏集合中 
    [navigationItem setLeftBarButtonItem:leftButton];  
    [navigationItem setRightBarButtonItem:rightButton]; 
      
    //把导航栏添加到视图中 
    [self.view addSubview:navigationBar];
    
    //设置背景颜色
    self.navigationController.navigationBar.barTintColor =
    
    //设置标题颜色和按钮
    [self.navigationController.navigationBar setTitleTextAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:19],NSForegroundColorAttributeName:[UIColor whiteColor]}];
    
    //设置类似返回按钮颜色
    self.navigationController.navigationBar.tintColor = [UIColor whiteColor];// 其上默认按钮（比如返回按钮）颜色